Jerry Hey wrote:

I think that my wife, Joy,  has determined the peripheral port size
and timing  of the Leman Engine.  Here is what we did.   First I
measured the inside vertical height of a l3B rotor housing.  This I
determined to be 9.44 inches which we divided in two (4.72")since we
were only interested in the top half where  the intake port is. Now

I

step out of the picture and Joy takes over.   The second step was to
import the drawing of the Leman engine into PhotoShop where it was
cropped to eliminate all but the top half of the rotor housing.

This

was saved as an EPS and exported to PageMaker.  Then, in PageMaker
she drew a line 4.72" long and scaled the eps image so that the
inside top of the rotor housing and the horizontal center line
matched up with the ends of the 4.72  line.   At this point the

Leman

drawing was at one to one.  Then, using Pagemaker  tools,  Joy
measured  from the center line to the bottom and top of the P Port.
It was 1.2" to the bottom and 3.188 inches to the top.  That is

close

enough to use a 2"i.d. x 2.25 o.d. aluminum tube for the insert.

The

runners appear to be same diameter as the port.

Don't know what I'd do without her.    Jerry

         Jerry,

           Any chance of a drawing of the Lemans housing with these

numbers

    shown for the artistic and math challenged among us?

         Kelly Troyer

Mark wrote:
Another way to do the same thing is to import the bit map into a CAD program
(most support this) and then trace the rotor housing and ports over it,
scaling the whole thing to a know dimension. If you then print out to scale
on an A3 (2xUS Letter is??) lasar printer, you should have a paper template
accurate to within a mm or less.
Mark Wrathall
www.rotary.microcosman.com

 
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